<?php
//RECEBE O EMAIL QUE VEM DO GET
$email = $_GET['emailCod'];

//DECRIPTANDO O EMAIL
$emailDecod = base64_decode($email);

?>
<div class="alert alert-success alert-dismissable">
    <button type="button" class="close" data-dismiss="alert" aria-hidden="true">&times;</button>
    <strong>OK!</strong> Enviado com Sucesso. Confira seu email <?php echo $emailDecod; ?>
</div>